19408780882 has 4 divisors (see below), whose sum is σ = 29113171326. Its totient is φ = 9704390440.

The previous prime is 19408780879. The next prime is 19408780891. The reversal of 19408780882 is 28808780491.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16356107881 + 3052673001 = 127891^2 + 55251^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4852195219 + ... + 4852195222.

Almost surely, 2^19408780882 is an apocalyptic number.

19408780882 is a deficient number, since it is larger than the sum of its proper divisors (9704390444).

19408780882 is an equidigital number, since it uses as much as digits as its factorization.

19408780882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9704390443.

The product of its (nonzero) digits is 2064384, while the sum is 55.

The spelling of 19408780882 in words is "nineteen billion, four hundred eight million, seven hundred eighty thousand, eight hundred eighty-two".